JPH03204263A - Multi-channel, music broadcast equipment utilizing public line - Google Patents

Abstract

PURPOSE:To broadcast music signals of various genre through a few line channels by dividing one line channel in response to number of respective sub- memories. CONSTITUTION:Number of data sent through a public line 1 by a line channel actually is decided. Moreover, a same number of memory group of a line channel number is given as a memory 4 and the actual channel number depends on the total number of sub memories possessed by each. Thus, the total number of sub memories corresponds to a channel number selectable as kinds of music signals. Then the title music broadcast device acts like a device for a multi-channel selecting number of channels over the line channels by using an operation section 10 so as to designate the channel.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a device that connects a host computer and terminal equipment via a public line and can broadcast music at all times when the line is not in use. This relates to channelization technology.

[Conventional technology and its problems]

The inventor has conventionally established a system that automatically switches telephone lines when normal telephone functions are not being used, and constantly transmits music stored in a host computer as digital information to a terminal device, thereby providing background music to each home. We have developed a system to provide
No. 59957).

By the way, the above technology is based on the assumption that only one channel can be used.

Therefore, the music transmitted to each home is transmitted in one direction, and the terminal device cannot select the genre of music of its choice, resulting in a lack of versatility.

On the other hand, with analog telephone lines, it is possible to create multiple channels up to a maximum of 4 channels by using the direct current pulses of the line, but even when using direct current pulses in this way, it is not possible to create multiple channels. That is difficult.

Furthermore, in order to create multi-channels by changing the DC pulses, the entire telephone network must be changed, so there is a practical problem that line users cannot do it alone.

The present invention aims to solve these conventional problems, and aims to provide a music broadcasting device that can extremely easily perform multi-channeling by improving the terminal device and further processing the data. purpose.

[Means to solve the problem]

In the multi-channel music broadcasting device using a public line according to the present invention, the following means are used to achieve the above object. In other words, it automatically connects when you do not use the telephone function,
A plurality of sub-memories are arranged in parallel corresponding to each line channel as a means to be applied to a music broadcasting device that plays music by downloading the digital signal of a line channel selected by specifying a channel via a public line. and adds an identification header corresponding to the number of each submemory to the digital signal of each line channel, and loads data into a specific submemory corresponding to the line channel according to the identification header. We then decided to transfer this data to the sound source via a sequencer.

] The line channel determines the number of data actually transmitted over the public line. Also, as memory, the same number of memory groups as the number of line channels are provided,
The actual number of channels is determined by the total number of submemories each has. Therefore, the total number of sub-memories corresponds to the number of channels that can be selected as music types. Then, it functions as a multi-channel music broadcasting device in which more channels than the line channel can be selected by specifying the channel using the operation unit, for example.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in detail with reference to the attached drawings. FIG. 1 is a block diagram showing the mechanism on the terminal device side, in which a digital signal from a public line 1 is downloaded via a modem 2, It is temporarily stored in the memory 4 according to the processing by the CPU 3. This data is sequentially processed by the sequencer 5, transmitted to the sound source 6, and then sequentially reproduced as music by the output device 7. 8 is a normal telephone; 9 is a network control unit (NCU) for automatically switching between telephone function and music playback function; 1
0 is an operation unit equipped with a power switch, channel switching, etc. With this mechanism, when the handset of the telephone 8 is picked up or when there is a call signal from another telephone, the NCU 9 performs the normal telephone function, and at other times, that is, when the telephone function is not being used. Sometimes NC
U9 selects the music playback function, processes the data transmitted via the public network 11, and plays music from the output device 7.

In the present invention, music playback is performed using multiple channels. Next, the mechanism for achieving this will be explained. Figure 2 shows a concept in which memories are provided in a number corresponding to the number of set channels. In the figure, 8 channels are set. Note that as a means for selecting the digital signal itself transmitted via the public line 1, a configuration is known in which the direct current pulse of the public line is used and a switch installed in a telephone office is changed to obtain four channels.

Hereinafter, this channel will be referred to as a line channel. In the figure,
The signal downloaded via the modem is sent to HaSofa 1
1 through memory groups 4a to 4a according to the line channel.
Transferred to 4d. Each of these memory groups has two sub-memories arranged in parallel. Here, if two types of identification headers are added as digital signals in one line channel, the digital signal from the line is distributed to four channels, the number of line channels, according to the identification headers in data processing A of the CPU 3, Furthermore, the address is divided into two and data is loaded into either of the two sub-memories. In this way, one line channel is effectively separated into two channels.

The data once loaded into one of the submemories is sent to the sequencer 5 via the buffer 12 in processing B of the CPU 3, processed by the sound source 6, and then played back.

Note that each submemory is shown as a virtual area in the block diagram, and in reality, a plurality of RAMs are used. That is, if only one RAM is used, the data is downloaded once and then the music is played back, which causes a blank time during music playback, so this is to prevent this. Furthermore, in order to prevent the occurrence of blank time when switching channels, a fixed surface is built into the terminal device as a ROM, and when a switching operation is performed, the data written in this ROM is processed. Good too.

In this example, we have explained the case where an analog public line is used, but even when using a digital public line, it is not only possible to achieve multi-channeling with the same configuration, but also multi-stage multiplication is possible. shall be. Further, the number of sub-memories is not limited to two, but three or four, or an abnormal number thereof, can be connected in parallel.

However, as the number increases, the time required for downloading to one sub-memory becomes longer, so the decision is made depending on the transmission speed of the public line and the processing capacity of the CPU 3.

〔Effect of the invention〕

Since the present invention has the above-described configuration, one line channel can be divided according to the number of sub-memories, and the number of channels that can actually be used as a device can be expanded to the total number of sub-memories. did it. Therefore, it is possible to provide a multi-channel music broadcasting device that can broadcast music of many genres with a small number of line channels, and its range of use is dramatically wider than that of conventional devices, resulting in significant effects. It became possible to play.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the device of the present invention, and FIG.
The figure is a schematic diagram illustrating a memory configuration for achieving multi-channel. In addition, in the figure 1...Public line, 2...Modem, 3...
cpU, 4...Memory, 5...Sequencer, 6...
・Sound source, 7... Output device, 8... Telephone, 9...
Network control unit (NCU), 10... operation unit. that's all

Claims (1)

[Claims] 1. In a music broadcasting device that automatically connects when the telephone function is not in use and plays music by downloading the digital signal of the line channel selected by the channel specification via the public line, the system supports each line channel. Each has a memory in which a plurality of sub-memories are arranged in parallel, and an identification header corresponding to the number of each sub-memory is added to the digital signal of each line channel, and the line channel is selected according to the identification header. A multi-channel music broadcasting device using a public line, characterized in that data is loaded into a specific sub-memory corresponding to the data, and the data is transferred to a sound source via a sequencer.